Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2016
Mar. 03, 2017
Jun. 30, 2016
May 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Document And Entity Information [Abstract]            
Document Type 10-K          
Amendment Flag false          
Document Period End Date Dec. 31, 2016          
Document Fiscal Year Focus 2016          
Document Fiscal Period Focus FY          
Trading Symbol PRSS          
Entity Registrant Name CAFEPRESS INC.          
Entity Central Index Key 0001117733          
Current Fiscal Year End Date --12-31          
Entity Well-known Seasoned Issuer No          
Entity Current Reporting Status Yes          
Entity Voluntary Filers No          
Entity Filer Category Smaller Reporting Company          
Entity Common Stock, Shares Outstanding   16,643,037        
Entity Public Float     $ 19,451,697 $ 55,800,000 $ 61,800,000 $ 64,400,000